| Most common failures | No# failures |
|---|
| Brake pipe excessively corroded | 608 |
| Headlamp aim out of alignment | 376 |
| Parking brake: efficiency below requirements |3.7.B.7| | 372 |
| Rear parking brake recording little or no effort | 363 |
| Registration plate lamp issues | 208 |
| Windscreen wiper does not clear the windscreen effectively | 191 |
| Parking brake lever has no reserve travel |3.1.6b| | 168 |
| Brakes imbalanced across an axle | 96 |
| Exhaust emits an excessive level of metered smoke for a turbo charged engine |7.4.B.3b| | 92 |
| Rear Exhaust has a major leak of exhaust gases |7.1.2| | 91 |
| Nearside Front position lamp|s| not working |1.1.A.3b| | 91 |
| Parking brake: efficiency below requirements |3.7.C.1b| | 90 |
| Registration plate issues | 85 |
| Nearside Front wheel bearing has excessive play |2.5.A.3c| | 84 |
| Offside Front position lamp|s| not working |1.1.A.3b| | 78 |
| Offside Front wheel bearing has excessive play |2.5.A.3c| | 78 |
| Nearside Stop lamp not working |1.2.1b| | 57 |
| Nearside Rear Direction indicator incorrect colour |1.4.A.2f| | 56 |
| Rear brake binding | 56 |
| Offside Stop lamp not working |1.2.1b| | 49 |
| Exhaust has a major leak of exhaust gases |7.1.2| | 47 |
| Offside Rear fog lamp not working |1.3.2b| | 47 |
| Front brake disc in such a condition that it is seriously weakened | 46 |
| Service brake: efficiency below requirements |3.7.B.7| | 45 |
| Offside Rear Direction indicator incorrect colour |1.4.A.2f| | 43 |
| Nearside Front Front wheel bearing has excessive play |2.5.A.3c| | 42 |
| Offside Front Direction indicator incorrect colour |1.4.A.2f| | 41 |
| Rear Exhaust has part of the system excessively deteriorated |7.1.1a| | 39 |
| Front brake application uneven | 36 |
| Nearside Front Direction indicator incorrect colour |1.4.A.2f| | 35 |
| Centre Stop lamp not working |1.2.1b| | 34 |
| Offside Front Front wheel bearing has excessive play |2.5.A.3c| | 32 |
| Rear brake disc in such a condition that it is seriously weakened | 31 |
| Brake pedal spongy |3.3.B.1b| | 28 |
| Emissions not tested |7.0| | 28 |
| Offside Front Front position lamp|s| not working |1.1.A.3b| | 27 |
| Nearside Front Front position lamp|s| not working |1.1.A.3b| | 27 |
| Nearside Rear Stop lamp not working |1.2.1b| | 26 |
| Anti-lock braking system warning lamp indicates an ABS fault | 25 |
| Fuel system component leaking |7.2.3| | 25 |
| Rear Mechanical brake component has restricted free movement | 22 |
| Offside Rear Stop lamp not working |1.2.1b| | 21 |
| Nearside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 21 |
| Nearside front brake binding |3.7.B.1| | 21 |
| Stop lamp not working |1.2.1b| | 20 |
| Brake pedal creeps down when held under pressure |3.3.B.1a| | 20 |
| Offside Headlamp aim beam image obviously incorrect |1.8.A.1b| | 20 |
| Nearside Rear Shock absorber has a serious fluid leak |2.7.3| | 19 |
| Exhaust tailpipe not capable of allowing the emission probe to be inserted |7.4.B.1| | 19 |
| Offside Headlamp not working on dipped beam |1.7.5a| | 19 |
| Offside Rear brake disc excessively pitted |3.5.1h| | 18 |
| Rear fog lamp not working |1.3.2b| | 18 |
| Brake performance not tested |3.7.A.1| | 18 |
| Battery insecure |1.9.1| | 18 |
| Offside Front Wheel nut|s| missing |4.2.A.1e| | 17 |
| Offside Rear Shock absorber has a serious fluid leak |2.7.3| | 17 |
| Nearside Headlamp not working on dipped beam |1.7.5a| | 16 |
| Offside Rear Wheel nut|s| missing |4.2.A.1e| | 15 |
| Nearside Rear coil spring fractured |2.4.C.1a| | 15 |
| Rear Rear fog lamp not working |1.3.2b| | 15 |
| Offside Rear passenger door cannot be opened from outside the vehicle |6.2.B.1c| | 15 |
| Fuel pipe leaking |7.2.3| | 15 |
| Service brake: efficiency below requirements |3.7.C.1a| | 14 |
| Direction indicators incorrect colour |1.4.A.2f| | 14 |
| Windscreen has damage | 14 |
| Nearside Rear Wheel nut|s| missing |4.2.A.1e| | 14 |
| Exhaust has part of the system excessively deteriorated |7.1.1a| | 14 |
| Offside Rear Rear fog lamp not working |1.3.2b| | 13 |
| Brake hose excessively deteriorated | 13 |
| Offside Front brake disc excessively pitted |3.5.1h| | 12 |
| Power steering pipe|s| or hose|s| leaking |2.3.3b| | 12 |
| Nearside rear brake recording little or no effort |3.7.B.5a| | 12 |
| Offside Rear coil spring fractured |2.4.C.1a| | 12 |
| Nearside Front Lower Suspension arm has excessive play in a ball joint |2.4.G.2| | 11 |
| Nearside Rear passenger door cannot be opened from outside the vehicle |6.2.B.1c| | 11 |
| Nearside Rear brake disc contaminated by oil |3.5.1h| | 11 |
| Offside front brake binding |3.7.B.1| | 11 |
| Nearside Rear brake disc excessively pitted |3.5.1h| | 11 |
| Centre Rear Stop lamp not working |1.2.1b| | 11 |
| Mechanical brake component has restricted free movement | 11 |
| Exhaust emits excessive smoke or vapour of any colour |7.4.B.4| | 10 |
| Nearside Rear Direction indicators incorrect colour |1.4.A.2f| | 10 |
| Centre Exhaust has a major leak of exhaust gases |7.1.2| | 10 |
| Brake pedal anti-slip provision missing |3.3.A.1b| | 10 |
| Offside rear brake recording little or no effort |3.7.B.5a| | 9 |
| Offside Front Headlamp not working on dipped beam |1.7.5a| | 9 |
| Offside Headlamp excessively deteriorated so that the light output is severely reduced |1.7.5a| | 9 |
| Offside Windscreen wiper blade deteriorated |8.2.2| | 9 |
| Rear fog lamp tell tale not working |1.3.1b| | 9 |
| Windscreen wiper blade insecure | 9 |
| Rear brake application uneven | 9 |
| Direction indicator incorrect colour |1.4.A.2f| | 9 |
| Rear fog lamp switch faulty |1.3.1a| | 9 |
| Rear Exhaust system not adequately supported |7.1.1| | 9 |
| Nearside Rear Brake pipe inadequately clipped |3.6.B.1| | 9 |
| Parking brake efficiency below requirements (1.4.2 (a) (i)) | 8 |
| Front wheel bearing has excessive play |2.5.A.3c| | 8 |
| Nearside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 8 |
| Nearside Front Wheel nut|s| missing |4.2.A.1e| | 8 |
| Front position lamp|s| not working |1.1.A.3b| | 8 |
| Rear Direction indicator incorrect colour |1.4.A.2f| | 8 |
| Offside Rear Direction indicators incorrect colour |1.4.A.2f| | 8 |
| Hazard warning switch insecure |1.4.B.1d| | 8 |
| Rear Exhaust has a part missing |7.1.1a| | 8 |
| Exhaust system not adequately supported |7.1.1| | 7 |
| Brake pedal creeps down while the pedal is held under pressure |3.3.B.1a| | 7 |
| Offside Headlamp not in good working order adversely affecting beam image |1.2.4a| | 7 |
| Rear Brake pipe leaking |3.6.A.1| | 7 |
| Offside Front constant velocity joint gaiter split |2.5.C.1a| | 7 |
| Windscreen has a sticker or other obstruction encroaching into the swept area by more than 40mm outside zone `A` |8.3.1e| | 7 |
| Offside Rear coil spring broken |2.4.C.1a| | 7 |
| Offside Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 7 |
| Hazard warning lamps not flashing in phase, with ignition off |1.4.B.1f| | 7 |
| Offside Front Direction indicators incorrect colour |1.4.A.2f| | 7 |
| Nearside Front constant velocity joint gaiter damaged to the extent that it no longer prevents the ingress of dirt etc |2.5.C.1a| | 7 |
| Bonnet cannot be secured in the closed position |8.4.1| | 7 |
| Direction indicators not working |1.4.A.2c| | 7 |
| Offside Front Braking system leaking |3.6.A.1| | 7 |
| Fuel cap/sealing device does not fasten securely maintaining the sealing arrangement |7.2.4b| | 7 |
| Power steering component|s| leaking |2.3.3b| | 7 |
| Braking system leaking |3.6.A.1| | 6 |
| Hazard warning switch faulty |1.4.B.1d| | 6 |
| Offside Rear Brake pipe inadequately clipped |3.6.B.1| | 6 |
| Offside Outer Front constant velocity joint gaiter split |2.5.C.1a| | 6 |
| Exhaust emissions Lambda reading after 2nd fast idle outside specified limits |7.3.D.3| | 6 |
| Offside Rear brake disc contaminated by oil |3.5.1h| | 6 |
| Brake pedal has insufficient reserve movement |3.3.A.5| | 6 |
| Nearside Front Direction indicators incorrect colour |1.4.A.2f| | 6 |
| Nearside Rear Fuel pipe leaking |7.2.3| | 6 |
| Nearside Front front brake binding |3.7.B.1| | 6 |
| Offside Rear rear brake recording little or no effort |3.7.B.5a| | 6 |
| Nearside Front Headlamp aim beam image obviously incorrect |1.8.A.1b| | 6 |
| Rear Stop lamp not working |1.2.1b| | 6 |
| Nearside Front Headlamp not working on dipped beam |1.7.5a| | 6 |
| Parking brake efficiency below requirements |1.4.2 |a| |i|| | 6 |
| Offside Front front brake binding |3.7.B.1| | 6 |
| Front Direction indicator incorrect colour |1.4.A.2f| | 6 |
| Nearside Headlamp aim aimed so that it dazzles other road users |1.8.A.1a| | 6 |
| Nearside Headlamp excessively deteriorated so that the light output is severely reduced |1.7.5a| | 6 |
| Parking brake efficiency less than 50% of the required value |1.4.2 |a| |ii|| | 6 |
| Front Front wheel bearing has excessive play |2.5.A.3c| | 6 |